WebContent: Disallow creating WebDriverConnections with existing sockets

This reverts commit d2b2d3ad8062d2ce1612f24e4c45d533344a2be3.

This is no longer needed once Ladybird will uses local socket files.

Userland/Services/WebContent/WebDriverConnection.cpp

@@ -257,7 +257,7 @@ ErrorOr<NonnullRefPtr<WebDriverConnection>> WebDriverConnection::connect(Web::Pa
     auto socket = TRY(Core::Stream::LocalSocket::connect(webdriver_ipc_path));
 
     dbgln_if(WEBDRIVER_DEBUG, "Connected to WebDriver");
-    return try_create(move(socket), page_client);
+    return adopt_nonnull_ref_or_enomem(new (nothrow) WebDriverConnection(move(socket), page_client));
 }
 
 WebDriverConnection::WebDriverConnection(NonnullOwnPtr<Core::Stream::LocalSocket> socket, Web::PageClient& page_client)

Userland/Services/WebContent/WebDriverConnection.h

@@ -26,7 +26,7 @@ namespace WebContent {
 
 class WebDriverConnection final
     : public IPC::ConnectionToServer<WebDriverClientEndpoint, WebDriverServerEndpoint> {
-    C_OBJECT(WebDriverConnection)
+    C_OBJECT_ABSTRACT(WebDriverConnection)
 
 public:
     static ErrorOr<NonnullRefPtr<WebDriverConnection>> connect(Web::PageClient& page_client, DeprecatedString const& webdriver_ipc_path);